Diatron Abacus 5 - Sample Measurement; Sample Handling and Types

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7.2.4 User Logon
If the multi-user feature is activated, a user must be logged in before the user interface of the ‘Abacus 5’ can be
accessed. You can log in on two different ways:
 Enter the user ID and password assigned to your account.
 Create a new user account.
The multi-user feature of the ‘Abacus 5’ analyzer tracks which user is logged on when important activities are
performed such as sample or QC measurements or calibration. The multi-user feature allows full access to
administrator users while restricting regular users from actions that change the way the ’Abacus 5’ analyzer operates,
such as changing calibration settings.
See section 15.7 for details about user management.
7.2.5 Pneumatic System Start and Blank Measurement
Before measuring any blood or control samples, the pneumatic system components of the ‘Abacus 5’ analyzer need
to be initialized and a blank measurement run and accepted. To start the pneumatic system and run a blank
measurement, click or tap the ‘Measure’ icon with the single test tube graphic on the top left corner of the screen.
The following sequence takes place:
 The color of the ‘Start’ button changes to red.
 The reagents are primed.
 The measuring system is flushed.
 The sample-door, syringe, needle x/y movement, and shear valve motors are activated and tested.
 The vacuum system is activated, and pump sensors and vacuum leakage is tested.
 A blank measurement is initiated automatically.
 An empty result screen is displayed.
 The blank measurement is performed.
 The results of the blank measurement are displayed.
The results of a blank measurement must be accepted before blood or control samples can be processed. If the
results from the first blank measurement are not acceptable, it does not necessarily mean that something is wrong
about your ‘Abacus 5’ analyzer. Please consider the following:
 Blood proteins or other particles can accumulate in the pneumatic tubing or components.
 Although the reagents contain antimicrobial agents, some microbial growth may still be present.
 An extended period of inactivity without performing a ‘prepare for shipment’ procedure may result in salt
crystal development in the pneumatic components.
Running additional blank measurements will usually bring the blank measurements down to an acceptable level.
Blank measurements will be flagged if they exceed the following thresholds:
 WBC >0.20 x 10
3
cells/µL
 RBC >0.05 x 10
6
cells/µL
 PLT >15 x 10
3
cells/µL
 HGB >1.0 g/dL